Trees and power lines

Trees/ vegetation that are too close to power lines are a hazard and a major cause of power disruptions. When trees come into contact with power lines it can pose a risk of serious injury and/or death to the public and cause wide spread damage to network equipment.

Trees need to be pruned to keep branches and other vegetation from interfering with power lines and equipment. If they are not managed, it can result in a power outage or the vegetation can become electrically live causing a dangerous situation.

If you see a tree touching a power line or any other hazardous tree condition, please contact us immediately on 03 687 4300 or 0800 661177

Government regulations

The Electricity (Hazards from Trees) Regulations have been in effect since July 1st 2003. The regulations set minimum distances trees must be kept away from power lines and methods of managing trees in the vicinity of power lines and electrical supply equipment. The purpose of these regulations is to protect the security of the electricity supply and the safety of the public.  

Electricity (Hazards from Trees) Regulations 2003

Tree owner's responsibilities

Tree owners are responsible for keeping their trees clear of power lines. 

Please check your trees, hedges and shelterbelts regularly. If you have concerns about trees on public land you should contact your local council or NZTA in the first instance. If you are unsure what to look for please contact Alpine Energy for a free assessment.

For more information about trees near power lines please consult our brochure.  

Planting guide

There are a variety of shrubs and trees suitable for planting near power lines. Please click on the link below for a list of these trees or contact Alpine Energy to discuss other options.

Planting Guide

How far to trim trees 

Ultimately keeping trees at least four metres away from the path of power lines is best. Trees closer than four metres to power lines are dangerous for you to cut yourself. You will need to arrange to have your tree trimmed by a network approved contractor

Our responsibilities

Alpine Energy undertakes routine vegetation surveys and maintenance on the network. During these surveys any trees or vegetation that are identified as posing a threat to the network will be detailed. If your trees have not been subject to a cut or trim at Alpine Energy’s cost you may be eligible for a first free trim. In this instance you will be issued a First Trim Notice. If our records show the trees have been subject to a first free trim previously then you will be issued a Trim Notice with a quote for the intended work. For more details around the notice systems please contact Alpine Energy’s Vegetation Department 03 687 4300. 

Tree trimming near powerlines/equipment

Cutting or trimming trees (including shelterbelts) that are within four metres of a power line is dangerous and must only be performed by an Alpine Energy approved arborist or contractor. For a list of network approved contractors click here

Trees outside the regulation criteria:

If you have concerns for trees outside the regulation criteria (fall distance hazards) please contact us for a free assessment. We may subsidise any intended work depending on the risk posed by the tree to the network.

Fall Zone

Report a tree near power lines

Email us if you see vegetation or trees that may be affecting power lines or any of our electrical assets. The email address is This email address is being protected from spambots. You need JavaScript enabled to view it.

Please include the following -

Contact name

Contact phone 

A detailed location of the address for the trees

Whether you are the legal owner of the property

How many trees require cutting?

Is it a trim or removal?

Are the trees on private property?

If possible can you please send us a photo